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GB/T 34577-2024: Technical guide for by-pass working on distribution network
Status: Valid GB/T 34577: Evolution and historical versions
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| GB/T 34577-2024 | English | 1559 |
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Technical guide for by-pass working on distribution network
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GB/T 34577-2024
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| GB/T 34577-2017 | English | 679 |
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Technical guide for by-pass working on distribution line
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GB/T 34577-2017
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PDF similar to GB/T 34577-2024
Basic data | Standard ID | GB/T 34577-2024 (GB/T34577-2024) | | Description (Translated English) | Technical guide for by-pass working on distribution network | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | K40 | | Classification of International Standard | 29.240.01 | | Word Count Estimation | 78,720 | | Date of Issue | 2024-09-29 | | Date of Implementation | 2025-04-01 | | Older Standard (superseded by this standard) | GB/T 34577-2017 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 34577-2024: Technical guide for by-pass working on distribution network---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 29.240.01
CCSK40
National Standard of the People's Republic of China
Replaces GB/T 34577-2017
Technical Guidelines for Bypass Operation of Distribution Network
Released on 2024-09-29
2025-04-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
Introduction V
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Classification of work items 2
5 General requirements 2
6 Work system 3
7 Technical Requirements 4
8 On-site operation requirements 5
9 Typical operation items and safety precautions 9
10 Testing, transportation and storage of tools and equipment 16
Appendix A (Informative) Operation Guidelines for Overhead Laying of Bypass Operation Tools and Equipment 18
Appendix B (Informative) Typical Operation Project Name 25
Appendix C (Informative) 10(20)kV Typical Bypass Operation Item Operation Flow 27
Appendix D (Informative) 0.4kV Typical Bypass Operation Item Operation Process 56
References 70
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
This document replaces GB/T 34577-2017 "Technical Guidelines for Bypass Operation of Distribution Lines".
In addition to structural adjustments and editorial changes, the main technical changes are as follows.
a) The scope of application has been changed (see Chapter 1, Chapter 1 of the.2017 edition);
b) The definition of bypass operation has been changed (see 3.1, 3.1 of the.2017 edition)
c) Deleted bypass flexible cable, bypass cable connector, bypass load switch, quick-swap bypass cable connector, bypass cable terminal
Terminals, quick-plug bypass cable terminals, bolt-on bypass cable terminals, plug-in bypass cable terminals and bypass cable drain clamps
Terms and definitions (see 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 3.10 of the.2017 edition);
d) Added load transfer operations, mobile power supply devices, mobile power supply device power supply operations, non-stop power operations, short-term power outage operations, and
Terms and definitions for network and mobile power supply device decoupling (see 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8);
e) Added classification of work items (see Chapter 4);
f) Added requirements and responsibilities for work coordinators (see 5.1.2, 5.1.4);
g) Changed the requirements for work leaders and team leaders (see 5.1.3, 5.1.4, 4.1.2, 4.1.3 of the.2017 edition);
h) Added requirements for the issuer of work permits (see 5.1.5);
i) Added technical requirements for nighttime emergency lighting (see 5.2.3);
j) The requirements for on-site inspection and deactivation of reclosing switches have been deleted (see 4.3.2 and 4.3.3 of the.2017 edition);
k) Added working requirements when equipment fails (see 5.3.2);
l) Added the work requirement of switching operation for feeders connected to operating equipment (see 5.3.3);
m) Deleted the validity period of the work ticket and the requirement that the person who issues the work ticket cannot concurrently serve as the work leader or team leader (see.2017
5.1.2 and 5.1.4 of the.2015 edition);
n) Deleted the work requirements for work leaders and team leaders (guardians) (see 5.2.2 and 5.2.3 of the.2017 edition);
o) Added on-site inspection system and work permit system (see 6.1 and 6.3);
p) Added the requirement of setting up a dedicated guardian (see 6.4.1);
q) Added requirements for tools and equipment used in bypass operations, technical requirements for equipment grounding resistance, insulation resistance, temporary power supply, etc. in the bypass circuit.
Technical requirements (see Chapter 7);
r) Added on-site operation requirements (see Chapter 8);
s) Changed the work items and safety matters (see Chapter 9, Chapter 6 of the.2017 edition)
t) Changed the use and storage of bypass equipment, deleted the use content, and added the test and transportation content
(See Chapter 10, Chapter 7 of the.2017 edition);
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Electricity Council.
This document is under the jurisdiction of the National Technical Committee for Standardization of Live Working (SAC/TC36).
This document was drafted by. China Electric Power Research Institute Co., Ltd., State Grid Zhejiang Electric Power Co., Ltd., State Grid Hunan Electric Power Co., Ltd.
Electric Power Research Institute of the Company, Jinhua Power Supply Company of State Grid Zhejiang Electric Power Co., Ltd., Qiantang District, Hangzhou City, State Grid Zhejiang Electric Power Co., Ltd.
Power Supply Company, State Grid Zhejiang Electric Power Co., Ltd. Training Center, State Grid Shandong Electric Power Company, Yunnan Power Grid Co., Ltd. Transmission Branch
Company, State Grid Hunan Electric Power Co., Ltd., China Southern Power Grid Research Institute Co., Ltd., Guangdong Power Grid Co., Ltd. Guangzhou Power Supply Bureau,
Quanzhou Power Supply Company of State Grid Fujian Electric Power Co., Ltd., Nanchang Power Supply Branch of State Grid Jiangxi Electric Power Co., Ltd., Wuhan Lide Electric Power Technology
Limited by Share Ltd.
The main drafters of this document are. Liu Kai, Yang Miao, Ma Zhenyu, Yang Xiaoxiang, Tang Chunjun, Li Jinliang, Jin Jianhua, Xia Jun, Liu Ting, Chen Zhiwei,
Zuo Xinbin, Wu Yilan, Tu Yongwei, Ma Pengfei, Qin Weinan, Mao Liuming, Zhou Mingjie, Yu Danqi, Tang Pan, Lin Guocheng, Wei Xiao, Wang Hongwu, Pan Ruijian,
Liang Guokai, Chen Rou, Xu Fuzhong, Liu Ziyi, and Wang Songfeng.
This document was first published in.2017 as GB/T 34577-2017, and this is the first revision.
Introduction
With the continuous development and maturity of technology, bypass operation has become an important means to improve the reliability of power supply in distribution networks.
Since its promulgation in.2017, it has effectively ensured the safe and efficient implementation of distribution line bypass operations.
The reliability of the bypass operation has been improved, and the scope and application scenarios of the bypass operation have been expanded. The bypass operation method of 10(20)kV distribution network has been gradually expanded to
In the 0.4kV distribution network, the operation methods are further enriched, and mobile power supply devices are used more and more.
In order to meet the development needs of bypass operation in distribution network and promote bypass operation through standardization, this paper proposes a revision of GB/T 34577.
The applicable voltage level of bypass operation is expanded from 10kV~20kV to 0.4kV~20kV, and the applicable scope of bypass operation is wider;
According to the source of power supply in the operation, bypass operation is divided into two categories. load transfer operation and mobile power supply device power supply operation.
The typical operation items, technical requirements, on-site operation requirements and safety precautions of the standard are clarified; at the same time,
It plays a leading role and puts forward requirements such as the design of distribution networks that are convenient for bypass operations, providing guidance and reference for the construction and transformation of distribution networks.
Technical Guidelines for Bypass Operation of Distribution Network
1 Scope
This document specifies the general requirements, work system, technical requirements, on-site operation requirements and precautions for distribution network bypass operations.
The classification of work items and work processes are listed.
This document is applicable to bypass operations carried out in distribution networks with voltage levels of 0.4kV~20kV.
2 Normative references
The contents of the following documents constitute essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 2900.55 Electrical terminology - Live working
GB/T 14286 Terminology of tools and equipment for live working
GB/T 18269 Hand tools for live working at voltage levels up to 1 kV AC and 1.5 kV DC
GB/T 18857 Technical Guidelines for Live Working on Distribution Lines
GB 26859 Electricity Safety Work Regulations - Power Lines
DL/T 974 Tool room for live working
DL/T 976 Preventive testing procedures for tools, devices and equipment for live working
DL/T 2555 (all parts) Distribution line bypass operation tools and equipment
DL/T 2555.1 Distribution line bypass operation tools and equipment Part 1.Bypass cables and connectors
QC/T 911 Power Supply Cart
3 Terms and definitions
The terms and definitions defined in GB/T 2900.55, GB/T 14286 and the following apply to this document.
3.1
Bypass working
Build a temporary power supply circuit to achieve construction and maintenance methods that provide uninterrupted or short-term power supply to users.
Note 1.Live working refers to work where workers come into contact with live parts, or any part of the worker’s body or the tools, devices or equipment used enters the live working area.
During bypass operation, a temporary power supply circuit needs to be built for power supply. During the construction of temporary power supply, live working may be required.
Way.
Note 2.The methods for building a temporary power supply circuit mainly include using bypass operation tools and equipment to build a power supply circuit in parallel with the line (equipment) to be repaired,
There are three options. temporarily drawing power from the nearby power grid and using a mobile power supply device to temporarily supply power to the load.
Note 3.Bypass operation includes load transfer operation and mobile power supply device power supply operation.
3.2
load shift working
During the operation, use bypass operation tools and equipment to build a temporary power supply circuit, or temporarily take power from the nearby power grid to transfer the load.
After that, the power outage construction and maintenance operation mode is carried out on the lines (equipment) that have been taken out of operation.
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